Just an FYI, On2's the company that released the VP3 video codec under an irrevocable free license (including covering any patents On2 has, including for commercial use), specifically to provide a basis for the Ogg Theora video format. So they are definitely supporters of open source software.
I wonder if Google will open up VP6 (especially if it has any advantages over H.264.) Then it could be used for in-browser video. HTML5 video tag for newer browsers, and flash for older ones (since flash also supports VP6).